<template>
  <div style="padding: 10px">
    <!--    功能区域-->
    <div style="margin: 10px 0">
      <el-button type="primary" @click="add"  v-if="user.role === 1">新增</el-button>

      <el-popconfirm
              title="确定删除吗？"
              @confirm="deleteBatch"
              v-if="user.role === 1"
      >
        <template #reference>
          <el-button type="danger" >批量删除</el-button>
        </template>
      </el-popconfirm>
    </div>

    <!--    搜索区域-->
    <div style="margin: 10px 0">
      <el-input v-model="search" placeholder="请输入关键字" style="width: 20%" clearable></el-input>
      <el-button type="primary" style="margin-left: 5px" @click="load">查询</el-button>
    </div>
    <el-table
            v-loading="loading"
            :data="tableData"
            border
            stripe
            style="width: 100%"
            @selection-change="handleSelectionChange"
            >

      <el-table-column type="selection" width="55" v-if="user.role === 1"></el-table-column>
      <el-table-column prop="id" label="ID" sortable> </el-table-column>
      <el-table-column prop="name" label="名称"></el-table-column>
      <el-table-column prop="price" label="单价"> </el-table-column>
      <el-table-column prop="author" label="作者"> </el-table-column>
      <el-table-column prop="createTime" label="出版时间"></el-table-column>
      <!--封面-->
      <el-table-column label="封面">
        <template #default="scope">
          <el-image
                  style="width: 100px; height: 100px"
                  :src="scope.row.cover"
                  :preview-src-list="[scope.row.cover]">
          </el-image>
        </template>
      </el-table-column>
      <el-table-column label="操作" width="240">
        <template #default="scope">
          <el-button type="primary" size="mini" @click="buy(scope.row.id)">购买</el-button>
          <el-button size="mini" @click="handleEdit(scope.row)">编辑</el-button>
          <el-popconfirm title="确定删除吗？" @confirm="handleDelete(scope.row.id)">
            <template #reference>
              <el-button size="mini" type="danger">删除</el-button>
            </template>
          </el-popconfirm>
        </template>
      </el-table-column>
    </el-table>

    <div style="margin: 10px 0">
      <el-pagination
              @size-change="handleSizeChange"
              @current-change="handleCurrentChange"
              :current-page="currentPage"
              :page-sizes="[5, 10, 20]"
              :page-size="pageSize"
              layout="total, sizes, prev, pager, next, jumper"
              :total="total">
      </el-pagination>

      <el-dialog title="提示" v-model="dialogVisible" width="30%">
        <el-form :model="form" label-width="120px">
          <el-form-item label="名称">
            <el-input v-model="form.name" style="width: 80%"></el-input>
          </el-form-item>
          <el-form-item label="价格">
            <el-input v-model="form.price" style="width: 80%"></el-input>
          </el-form-item>
          <el-form-item label="作者">
            <el-input v-model="form.author" style="width: 80%"></el-input>
          </el-form-item>
          <el-form-item label="出版时间">
            <!--<el-date-picker v-model="form.createTime"  value-format="YYYY-MM-DD" type="date" style="width: 80%" clearable></el-date-picker>-->

            <el-date-picker
                    label="日期选择"
                    prop="maturityDate"
                    v-model="form.createTime"
                    value-format="YYYY-MM-DD"
                    type="date"
                    placeholder="请选择日期选择"
                    style="width: 30%"
            ></el-date-picker>
          </el-form-item>

          <!--文件上传-->
          <el-form-item label="封面">                                              <!--回调函数-->
            <el-upload ref="upload" :action="filesUploadUrl" :on-success="filesUploadSuccess">
              <el-button type="primary">点击上传</el-button>
            </el-upload>
          </el-form-item>


        </el-form>
        <template #footer>
          <span class="dialog-footer">
            <el-button @click="dialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="save">确 定</el-button>
          </span>
        </template>
      </el-dialog>


    </div>

  </div>
</template>

<script>


  import request from "@/utils/request";

  export default {
    name: 'Book',
    components: {

    },
    data() {
      return {
        form: {},
        dialogVisible: false,
        search: '',
        currentPage: 1,
        pageSize: 10,
        total: 0,
        tableData: [],
        user: {},
        // filesUploadUrl: "http://" + window.server.filesUploadUrl + ":9090/files/upload",
        filesUploadUrl: "http://" + "localhost" + ":9090/files/upload",
        //批量删除
        ids: []
      }
    },
    created() {
      //获取全局的user
      let userStr = sessionStorage.getItem("user") || "{}"
      this.user = JSON.parse(userStr)
      this.load()
    },
    methods: {
      filesUploadSuccess(res) {
        console.log(res)
        this.form.cover = res.data
      },
      load() {
        request.get("/book", {
          params: {
            pageNum: this.currentPage,
            pageSize: this.pageSize,
            search: this.search
          }
        }).then(res => {
          console.log(res)
          this.tableData = res.data.records
          this.total = res.data.total
        })
      },
      add() {
        this.dialogVisible = true
        this.form = {}
        if (this.$refs['upload']) {
          this.$refs['upload'].clearFiles()  // 清除历史文件列表
        }

      },
      save() {
        if (this.form.id) {  // 更新
          request.put("/book", this.form).then(res => {
            console.log(res)
            if (res.code === '0') {
              this.$message({
                type: "success",
                message: "更新成功"
              })
            } else {
              this.$message({
                type: "error",
                message: res.msg
              })
            }
            this.load() // 刷新表格的数据
            this.dialogVisible = false  // 关闭弹窗
          })
        }  else {  // 新增
          request.post("/book", this.form).then(res => {
            console.log(res)
            if (res.code === '0') {
              this.$message({
                type: "success",
                message: "新增成功"
              })
            } else {
              this.$message({
                type: "error",
                message: res.msg
              })
            }

            this.load() // 刷新表格的数据
            this.dialogVisible = false  // 关闭弹窗
          })
        }

      },
      handleEdit(row) {
        this.form = JSON.parse(JSON.stringify(row))
        this.dialogVisible = true
        //存在在判断
        if (this.$refs['upload']) {
          this.$nextTick(() => { /**vue的钩子，处理未来元素***********************************************************/
            this.$refs['upload'].clearFiles()  // 清除历史文件列表
          })

        }

      },
      handleDelete(id) {
        console.log(id)
        request.delete("/book/" + id).then(res => {
          if (res.code === '0') {
            this.$message({
              type: "success",
              message: "删除成功"
            })
          } else {
            this.$message({
              type: "error",
              message: res.msg
            })
          }
          this.load()  // 删除之后重新加载表格的数据
        })
      },
      handleSizeChange(pageSize) {   // 改变当前每页的个数触发
        this.pageSize = pageSize
        this.load()
      },
      handleCurrentChange(pageNum) {  // 改变当前页码触发
        this.currentPage = pageNum
        this.load()
      },
      //选择数据回调函数
      handleSelectionChange(val) {
        this.ids = val.map(v => v.id)
      },
      //批量删除
      deleteBatch() {
        if (!this.ids.length) {
          this.$message.warning("请选择数据！")
          return
        }
        request.post("/book/deleteBatch", this.ids).then(res => {
          if (res.code === '0') {
            this.$message.success("批量删除成功")
            this.load()
          } else {
            this.$message.error(res.msg)
          }
        })
      },
      //沙箱支付
      buy(bookId) {
        request.get("/order/buy/" + bookId).then(res => {
          // 请求成功跳转AliPayController的支付的接口，向阿里发起请求
          console.log(res)
          window.open(res.data)
        })
      },

    }
  }
</script>
